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Calgon F-200 12 x 40 Activated Carbon (31 lbs/1 Cubic Foot)

Calgon F-200 Granular Activated Carbon is an excellent general grade carbon with good flow and absorptive properties. It is used for the removal of taste and odors, chlorine taste and odor, and many other contaminants. Periodic backwashing is required in down-flow filters. Maximum carbon life with backwashing is usually 3 years. Activated carbon is widely used in water filtration systems. A drawback to Activated Carbon is that its high surface area and the Carbon itself promote bacterial growth. Activated carbon for drinking water systems should always be followed by Ultraviolet sterilization systems. Granular activated carbon (GAC) filtration is most effective in removing organic contaminants from water. Organic substances are composed of two basic elements, carbon and hydrogen. Because organic chemicals are often responsible for taste, odor, and color problems, GAC filtration can generally be used to improve aesthetically objectionable water. GAC filtration is recognized by the Water Quality Association as an acceptable method to maintain certain drinking water contaminants within the limits of the EPA National Drinking Water Standards. Radon gas can also be removed from water by activated carbon filtration, but actual removal rates of radon for different types of activated carbon filtration equipment have not been established. Activated carbon works by attracting and holding certain chemicals as water passes through it. Activated carbon is a highly porous material and therefore it has an extremely high surface area for contaminant adsorption.